For vehicles made after 1996, retrieving the codes of the check machine light in your dash panel is simple. All you need to do is find your diagnostic connector placed under the dash by the driver side. You can then hook up a scanner and the codes will be displayed for you. If you don't have any scanner like most drivers, you can bring your vehicle to any local automotive parts store and they will usually scan the codes Free for you. However, for vehicles made on or before 1995, there is only one cheap way to get it: You do it yourself!
Obd1 Codes Secrets for Domestic Vehicles
On board diagnostic (Obd) was designed on vehicles adequate with electronic fuel injection so you can ordinarily retrieve the codes yourself. No need buying a scanner or running to any parts stores to check the machine light. This theory is called obd1 and applies to most vehicles made before 1995 for domestics and 1993 on imports. In this article, I will discuss the methods used by domestic vehicle manufacturers on how to check the machine lights in their cars and trucks.
For Gm domestic vehicles made before 1995, the diagnostic connector is placed under the dash panel by the driver side. To get the check machine codes to flash in your dash panel, use a jumper wire or a paper clip and connect terminals A and B of the diagnostic connector. Turn your ignition key on with machine off and the codes should start to blink. All codes should start with code 12 which is one long flash followed by 2 short flashes. This code 12 means the diagnostic theory is general and will repeat itself continuously if there are no trouble codes. Otherwise, code 12 will flash 3 times before flashing the fault codes.
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